Yes, total past 40 million and now my main machine has done my personal record on RAC:
Total credit 38,499,411
Average credit 100,123.95To overcome Heisenbergs:
"You can't always get what you want / but if you try sometimes you just might find / you get what you need." -- Rolling Stones

I have had two 780s since august. I do 4 AP at a time on both cards and 3 MB.To overcome Heisenbergs:
"You can't always get what you want / but if you try sometimes you just might find / you get what you need." -- Rolling Stones

GPU-Z says they're at about 90% load each as is. One freed CPU core and perfmon says my CPU is hovering at 98 or 99%.

Are you running SETI@Home 24/7 on that computer?

My comment only applies if you are.

You might want to free another CPU core. For a host of reasons my experience may not end-up being your experience, but...

I find if I let my CPU usage get that high it starts slowing-down my GPU work. I looked at your Free-DC stats and the daily production (which will rise slowly due to Pending work units) are not what I would expect for your GPUs *only*, even now.

Something's got you bogged-down a bit, or maybe you don't crunch all day and night.

My GPUs usually show a 95% or better utilization. I have CPU crunching turned completely off and still show anywhere from 40-60% CPU usage. Typically, I'll run 3MB, or 1AP, or 1AP + 1MB at a time on each of two cards. (don't judge anything by my numbers right now - my machines are not set-up to max-crunch SETI now)

And it's worth noting that the optimum number of simultaneous work units can change when the applications change, so you might have to re-tune if you change applications (stock vs optimized).

This is a guess, but I'm guessing you have too much CPU work running to get the maximum throughput from the GPUs.

By the way, I just went over 50,000 RAC for the first time in my 14 years of crunching! Seeing a RAC just under a quarter million is what I'm shooting for. :)

Congrats on that 50 000 and keep on crunching till you hit your goal. Tweak a bit here and there and try slowly and wait a few weeks to see how any change affects the RAC.To overcome Heisenbergs:
"You can't always get what you want / but if you try sometimes you just might find / you get what you need." -- Rolling Stones